Tinea versicolor is a skin infection caused by which organism?

Tinea versicolor is a skin infection caused by which organism?

• A. Malassezia furfur
• B. Trichophyton rubrum
• C. Trichophyton schoenleinii
• D. Microsporum gypseum

Answer: (A)

Tinea versicolor is primarily caused by the fungus Malassezia furfur, which is a type of yeast that is part of the normal flora of the skin. Under certain conditions, such as excessive heat, humidity, or hormonal changes, this organism can overgrow and lead to skin discoloration. The condition is characterized by patches of skin that may appear lighter or darker than the surrounding skin, commonly affecting the trunk, arms, and neck. In addition to its role in causing skin infections, Malassezia furfur is also known for its ability to metabolize fatty acids found in the skin's secretions, which can contribute to its growth. The other organisms listed are associated with different types of fungal skin infections. Trichophyton rubrum and Trichophyton schoenleinii are typically associated with dermatophyte infections, such as ringworm, while Microsporum gypseum is known to cause infections like tinea capitis, particularly in children. Each of these fungi has a specific pathogenic profile distinct from that of Malassezia furfur, which specifically causes tinea versicolor.

Tinea versicolor is primarily caused by the fungus Malassezia furfur, which is a type of yeast that is part of the normal flora of the skin. Under certain conditions, such as excessive heat, humidity, or hormonal changes, this organism can overgrow and lead to skin discoloration. The condition is characterized by patches of skin that may appear lighter or darker than the surrounding skin, commonly affecting the trunk, arms, and neck.

In addition to its role in causing skin infections, Malassezia furfur is also known for its ability to metabolize fatty acids found in the skin's secretions, which can contribute to its growth. The other organisms listed are associated with different types of fungal skin infections. Trichophyton rubrum and Trichophyton schoenleinii are typically associated with dermatophyte infections, such as ringworm, while Microsporum gypseum is known to cause infections like tinea capitis, particularly in children. Each of these fungi has a specific pathogenic profile distinct from that of Malassezia furfur, which specifically causes tinea versicolor.